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提出超混沌迭代系统的主动－被动（ＡＰＤ）同步方法，研究了它对语音的加、解密性能，证明此系统可以应用于数字语音保密通讯，并建立了计算机模拟超混沌迭代系统同步的数字语音加密解密系统，实现了混沌语音保密通讯．此方法具有同步速度快，恢复语音精度高，难于破译的特点
This paper proposes an active-passive (APD) synchronization method for hyperchaotic iterative system. Its performance of adding and decoding speech is studied. It is proved that this system can be applied to digital voice secure communication. And the digital speech of computer simulation of hyperchaotic iterative system is established. Encryption and decryption system, to achieve a chaotic voice secure communication. This method has the characteristics of fast synchronization, high accuracy of speech recovery and difficult to decipher